Sink apron



FIG. 1 is a top, front, right perspective view of another embodiment of the claimed design;

FIG. 2 is a front elevation view thereof; and,

FIG. 3 is a partial cross-sectional view taken along lines 2-2 in FIG. 2.

The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

CLAIM We claim the ornamental design for an sink apron, as shown and described. 